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Finding the Fourth Proportional to 388,818.50, 583,227.75 and 93,330.50

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Solution

The fourth proportional to 388,818.50, 583,227.75 and 93,330.50 is: 139,995.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,818.50 : 583,227.75 = 93,330.50 : x
  2. Step 2: Convert to fraction form
    388,818.50/583,227.75 = 93,330.50/x
  3. Step 3: Cross multiply
    388,818.50x = 583,227.75 × 93,330.50
  4. Step 4: Simplify right side
    388,818.50x = 54,432,937,521.38
  5. Step 5: Solve for x
    x = 54,432,937,521.38/388,818.50
  6. Step 6: Final answer
    x = 139,995.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.